SUNNY BOY Combiner Box

SUNNY BOY Combiner Box Where to Buy

SMA’s Sunny Boy / Sunny Central Combiner Boxes are ETL Listed to UL 1741 for countries requiring certification. Available in sizes ranging from six to 52 PV inputs, they provide greater flexibility and expandability in system design. Oversized bus-work adds high efficiency and dependability where it’s needed most. The large NEMA 3R/4 enclosure provides ample room for conductors, which reduces installation time. Designed with installers in mind, the Sunny Boy/Sunny Central Combiner Boxes save valuable time and resources while improving system design and reliability.


  • ELT Listed to UL 1741 for countries that require certification


  • Greatly simplifies input and output wiring
  • Available in 6 to 52 circuit configurations


  • Reliable bus-work for efficient high current conductor combining
  • Compact, rugged NEMA 3R/4 wall mount steel enclosure


  • PV positive wires all land directly on Touch Safe™ fuse holders